中文说明：
针对大数据信号处理时的特征选择与特征降维，给出了4种有效的特诊选择方法。
English Description：
In view of feature selection and feature dimension reduction in big data signal processing, four effective methods for special diagnosis selection are proposed
Feature selection and feature dimension reduction in big data signal processing
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中文说明：
针对大数据信号处理时的特征选择与特征降维，给出了4种有效的特诊选择方法。
English Description：
In view of feature selection and feature dimension reduction in big data signal processing, four effective methods for special diagnosis selection are proposed
特征降维\pca.m
特征降维\PCAtest.m
特征降维\sbs.m
特征降维\selcol.m
特征降维\sffs.m
特征降维\sfs.m
特征降维